The Behavior of Galvanized Steel Coated with a Double and Triple Layer of Hybrid Films
| Autor: | Rogério Freitas dos Santos, Iduvirges Lourdes Muller, Célia de Fraga Malfatti, Sandra Raquel Kunst, Elen Leal da Silva, Cláudia Trindade Oliveira |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Mechanical Engineering Context (language use) Condensed Matter Physics Methacrylate Silane Galvanization Corrosion Cerium nitrate symbols.namesake chemistry.chemical_compound chemistry Mechanics of Materials Monolayer symbols General Materials Science Composite material Layer (electronics) |
| Zdroj: | Materials Science Forum. :1604-1609 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.727-728.1604 |
| Popis: | The aim of this work is to characterize by electrochemical, physicochemical and morphological analysis the hybrid films applied on galvanized steel by dip-coating process. Preliminaries studies showed that a monolayer of silane is not enough to increase the corrosion resistance protection of the substrate. In this context, the galvanized steel was coated with a double and triple layer of hybrid film obtained from a sol constituted by silane precursors 3 - (trimetoxisililpropil) methacrylate (TMSPMA) and tetraethoxysilane (TEOS) with addition of cerium nitrate at a concentration of 0.01M. The hybrid films were cured for 20 minutes at 60°C in each application of the film. The results showed that a double and triple layer of hybrid film increase the barrier effect contributing to corrosion protection of galvanized steel. |
| Databáze: | OpenAIRE |
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